Question

Subtract 10 hours 20 minutes 35 seconds from 12 hours 18 minutes 40 seconds

Answer 1

12 hours 18 min 40 seconds

= (12 × 3600) + (18 × 60) + 40 seconds

= 43200 + 1080 + 40 seconds

= 44320 seconds

10 hours 20 min 35 seconds

= (10 × 3600) + (20 × 60) + 35 seconds

= 36000 + 1200 + 35 seconds

= 37235 seconds

Difference:

44320 – 37235

= 7085

7085 seconds = (1 × 3600) + 3480 + 5 seconds

= 1 hour 58 minutes 5 seconds